how to plot it?

Question

Sadiq Akbar 2021-2-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/744217-how-to-plot-it

评论： Sadiq Akbar 2021-2-13

I have the following code. I want a plot between var1 vs e where var1 is along x-axis and ranges from 0 to 10.

th=pi/180;
b=[var1;7;50*th;85*th];
u=[2;7;50*th;85*th]; 
[~,C]=size(b);
P=C/2;
M=2*C;
xo=zeros(1,M);
for k=1:M 
    for i=1:P 
        xo(1,k)=xo(1,k)+u(i)*exp(-1i*(k-1)*pi*cos(u(P+i))); 
    end 
end
xe=zeros(1,M);
for k=1:M
        for i=1:P
            xe(1,k)=xe(1,k)+b(i)*exp(-1i*(k-1)*pi*cos(b(P+i)));
        end 
end 
abc=0.0;
for m1=1:M
  abc=abc+(abs(xo(1,m1)-xe(1,m1))).^2;  
end 
abc=abc/M; 
e=abc

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Answer 1

Alan Stevens 2021-2-13

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https://ww2.mathworks.cn/matlabcentral/answers/744217-how-to-plot-it#answer_622517

在 MATLAB Online 中打开

More like this perhaps:

th=pi/180;
u=[2;7;50*th;85*th]; 
var1 = 0:0.5:10;                %%%%%%%%%%%%%%%%%%%%%
for j = 1:numel(var1)           %%%%%%%%%%%%%%%%%%%%%
    b=[var1(j);7;50*th;85*th];  %%%%%%%%%%%%%%%%%%%%%
    C=numel(b);                 %%%%%%%%%%%%%%%%%%%%%
    P=C/2;
    M=2*C;
    xo=zeros(1,M);
    for k=1:M 
        for i=1:P 
            xo(1,k)=xo(1,k)+u(i)*exp(-1i*(k-1)*pi*cos(u(P+i))); 
        end 
    end
    xe=zeros(1,M);
    for k=1:M
            for i=1:P
                xe(1,k)=xe(1,k)+b(i)*exp(-1i*(k-1)*pi*cos(b(P+i)));
            end 
    end 
    abc=0.0;
    for m1=1:M
      abc=abc+(abs(xo(1,m1)-xe(1,m1))).^2;  
    end 
    abc=abc/M; 
    e(j)=abc;                   %%%%%%%%%%%%%%%%%%%%%
end
plot(var1,e),grid
xlabel('var1'),ylabel('e')

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Sadiq Akbar 2021-2-13

Thank you very much dear Alan Stevens for your prompt response.

Sadiq Akbar 2021-2-13

Can we plot its surface plot? I mean when all the four elements of b are varied at the same time from 0 to 10 and then plot a surface plot for e vs b?

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